1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

El Dieciseis De Septiembre

Past Producer in Baja California, Mexico with commodity Tungsten
Map
XML
JSON
KML
C
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Economic information about the deposit and operations
  12. Mining district
  13. Ownership information
  14. Production statistics
  15. Reserves and resources
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10049027
MRDS ID MX00236
Record type Site
Current site name El Dieciseis De Septiembre
Related records 10206294

Geographic coordinates

Geographic coordinates: -116.00081, 32.21258 (WGS84)
Elevation 1500
Relative position 450 M SW OF LOS GAVILANES.

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

San Diego(quadrangle 1:250,000 scale)

Geographic areas

Country State
Mexico Baja California

Comments on the location information

  • ESTIMATE TO WITHIN 1 KM

Commodities

Commodity Importance
Tungsten Critical Primary

Materials information

Materials Type of material
Scheelite Ore
Garnet Gangue

Mineral occurrence model information

Model code 42
USGS model code 14a
Deposit model name W skarn

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Marble

Nearby scientific data

(1) -116.00081, 32.21258
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Bedding In Mm Rocks: N 70 E, 45-70 Nw. Foliation In Diorite Strikes Ne And Dips More Steeply Than Beds In The Pendant.

Comments on the geologic information

  • SCHEELITE IN SMALL ROOF PENDANT 20 M WIDE AND ABOUT 85 M LONG, CUT OFF ON ALL SIDES BY DARK BIOTITE DIORITE. SMALL MASS OF QUARTZ DIORITE INTRUDED PENDANT AND PART OF THE BIO. DIORITE S OF THE SHAFT. PROPERTY IS 260 M NW OF THE MAIN BODY OF QUARTZ DIORITE. PENDANT CONSISTS MAINLY OF HORNFELS, WITH SUBORDINATE MARBLE REPLACED BY TACTITE AT 3-4 PLACES ALONG BEDDING PLANES. NUMEROUS PEGMATITE DIKES CROSSCUT DEPOSIT.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Los Gavilanes

Ownership information

  • Type Owner
    Owner Cia. Minera Del Gran Oeste
    First year 1943

Production statistics

  • Year 1943
    Material ORE W
    Accuracy Estimate
    Description Ap_Grade: ^Ave. 0.91% Wo3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Wo3 Ore Tungsten Tungsten 1wt-pct

Comments on the production information

  • 30-35 TONS OF 0.91% TUNGSTATE ORE SORTED INTO PILES ON THE DUMPS (1945). OUT OF SOME 250-300 TONS OF ROCK EXTRACTED FROM THE 22.6 M SHAFT, ONLY 8-10 TONS OF ORE AVERAGING 0.9 OR 1.0% TUNGSTATE WERE OBTAINED.

Reserves and resources

  • Type In-situ
    Estimate year 1945
    Commodity Subtype Grade units Group Importance Year
    Tungsten Wo3 0.1 wt-pct Tungsten Major 1945

Comments on the reserve resource information

  • AVE. MINING WIDTH: 1.2 M ; AT BEST, THE DEPOSIT MAY CONTAIN ROUGHLY 2,500 TONS OF ORE AVGING 0.3 OR 0.4% WO3, FROM WHICH 1,000 TONS OF ORE CONTAINING 0.8 OR 0.9% WO3 COULD BE SORTED. BUT, SO MUCH BARREN ROCK WOULD HAVE TO BE MINED THAT THE TOTAL AMOUNT REMOVED WOULD BE ABOUT 4,000 TONS WITH AVE. WO3 CONTENT OF LESS THAN 0.2%.

Comments on the workings information

  • 22.6 M SHAFT AND ADIT, OPEN CUTS.

Reference information

Bibliographic references

  • Deposit

    FRIES, CARL AND SCHMITTER, EDUARDO, 1945, SCHEELITE DEPOSITS IN THE NORTHERN PART OF SIERRA DE JUAREZ NORTHERN TERRITORY LOWER CALIFORNIA, MEXICO: USGS BULL 946-C, P. 73-101

  • Production

    FRIES AND SCHMITTER, 1945, P. 83.

General comments

Subject category Comment text
Deposit SCHEELITE IN NARROW ZONES IN TACTITE WITHIN AND ADJACENT TO MARBLE, AND REPLACING BORDERS OF PEGMATITE DIKES THAT CROSSCUT ORE BODY. BEST ORE IN MOST COARSELY CRYSTALLINE GARNET-TACTITE. THREE PRICIPAL SCHEELITE-BEARING ZONES EXPOSED AT SURFACE. NORTHERNMOST ZONE:40 M. SECOND AND THIRD ZONES : 25 AND 35 M RESPECTIVELY. WIDTHS VARY FROM 0.1 TO 2.0 M, AVE. 0.5 M. ORE LENTICULAR AND POCKETY. MAX. DEPTH PROBABLY LESS THAN 35 M. FIVE SCHEELITE-BEARING ZONES EXPOSED IN ADIT.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1987 Staude, John-Mark G. (Page, Norman J.) U.S. Geological Survey
Updater 01-OCT-1987 Leonard, Kenneth R. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site